DescriptionThis video provides step-by-step repair instructions for replacing the air vane on a Briggs and Stratton small engine. The most common reasons for replacing the air vane are when replacing the air vane or when performing engine maintenance.
All of the information for this air vane replacement video is applicable to the following brands:
Briggs & Stratton, Toro, John Deere, Lawn Boy
Tools needed: Phillips-head screwdriver, 5/16th inch socket or nut driver, 3/8th inch socket or nut driver, pliers, ¼ inch socket or nut driver
Step-By-Step Instructions1
Before you replace the air vane on your engine first make sure the engine has cooled.
2
Next, you should remove the wire and boot from the spark plug to prevent the engine from accidentally starting.
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We recommend performing this procedure with little or no fuel in the tank.
4
Use a phillips-head screwdriver to unthread the mounting screws securing the engine cover.
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Next, release the starter rope from the retainer.
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Now use a 5/16th inch socket or nut driver to remove the screws securing the fuel tank.
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Use a 3/8th inch socket to remove the mounting bolt securing the tank to the side of the engine block.
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Remove the 3/8th inch bolts securing the blower housing.
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Pull off the blower housing and oil dipstick tube.
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Now use pliers to detach the air vane spring.
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Use a quarter-inch socket or nut driver to unthread the shoulder bolt securing the vane.
15
Install the new air vane by positioning it on the carburetor making sure the pin sits between the prongs of the choke arm.
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Thread and tighten the shoulder bolt to secure.
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Attach the spring to the new vane.
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Confirm that the choke thermostat arm is positioned inside the air vane hook
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Is aligned between the markings on both the front and side.
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Replace the blower housing making sure the attached dipstick tube is inserted into the sump.
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Thread the mounting bolts to secure and torque them to seven-and-a-half foot pounds.
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Confirm that the spacer is in place on the fuel tank then reposition the tank on the blower housing.
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Replace the bolt and mounting screws to secure.
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Realign the engine cover.
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Rethread and tighten the mounting screws.
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Depress the bail arm, extend the starter rope and secure it in the retainer.
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With the repair completed reattach the wire and boot to the spark plug refill the fuel tank and your engine should be ready for use.